Farsneaky Share definition Flag (noun) - A cleaver and deceptive little poop that disguises its self as fart. Usually tricking a person into soiling ones own pants. Ugh oh guys, I need to go home. I think I was just attacked by a farsneaky. Farsneaky by DoomsxDay122112 April 21, 2014 0 0 Get merch Get the Farsneaky mug. Buy Now — $32.95 See more merch